Remove unused HAVE_HWSAMPLER config option. It is not used anymore,
removing it.
Also make some functions static and some coding style fixes.
Signed-off-by: Robert Richter <robert.richter@amd.com>
 config HAVE_OPROFILE
        bool
 
-config HAVE_HWSAMPLER
-       bool
-
 config KPROBES
        bool "Kprobes"
        depends on MODULES
 
        select ARCH_INLINE_WRITE_UNLOCK_BH
        select ARCH_INLINE_WRITE_UNLOCK_IRQ
        select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
-       select HAVE_HWSAMPLER
 
 config SCHED_OMIT_FRAME_POINTER
        def_bool y
 
        return 0;
 }
 
-int oprofile_hwsampler_init(struct oprofile_operations* ops)
+static int oprofile_hwsampler_init(struct oprofile_operations *ops)
 {
        if (hwsampler_setup())
                return -ENODEV;
        return 0;
 }
 
-void oprofile_hwsampler_exit(void)
+static void oprofile_hwsampler_exit(void)
 {
        oprofile_timer_exit();
        hwsampler_shutdown();
 }
 
-int __init oprofile_arch_init(struct oprofile_operations* ops)
+int __init oprofile_arch_init(struct oprofile_operations *ops)
 {
        ops->backtrace = s390_backtrace;